Home / 113,869.72-157,128.28-66,113.74

Finding the Fourth Proportional to 113,869.72, 157,128.28 and 66,113.74

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Solution

The fourth proportional to 113,869.72, 157,128.28 and 66,113.74 is: 91,230.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,869.72 : 157,128.28 = 66,113.74 : x
  2. Step 2: Convert to fraction form
    113,869.72/157,128.28 = 66,113.74/x
  3. Step 3: Cross multiply
    113,869.72x = 157,128.28 × 66,113.74
  4. Step 4: Simplify right side
    113,869.72x = 10,388,338,250.57
  5. Step 5: Solve for x
    x = 10,388,338,250.57/113,869.72
  6. Step 6: Final answer
    x = 91,230.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.